Make GVN able to remove unnecessary calls to read-only functions again.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49842 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/MemoryDependenceAnalysis.cpp b/lib/Analysis/MemoryDependenceAnalysis.cpp
index 314d6e4..161c2fe 100644
--- a/lib/Analysis/MemoryDependenceAnalysis.cpp
+++ b/lib/Analysis/MemoryDependenceAnalysis.cpp
@@ -134,8 +134,7 @@
} else if (isa<CallInst>(QI)) {
AliasAnalysis::ModRefBehavior result =
AA.getModRefBehavior(CallSite::get(QI));
- if (result != AliasAnalysis::DoesNotAccessMemory &&
- result != AliasAnalysis::OnlyReadsMemory) {
+ if (result != AliasAnalysis::DoesNotAccessMemory) {
if (!start && !block) {
cachedResult.first = QI;
cachedResult.second = true;